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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
03/09/2007 |
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Data da última atualização: |
13/02/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
BRUSSAARD, L.; RUITER, P. C. de; BROWN, G. G. |
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Afiliação: |
Lijbert Brussaard, Wageningen University - Department of Soil Quality; Peter C. de Ruiter, Wageningen University and Research Centre - Soil Science Centre; George G. Brown, Embrapa Florestas. |
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Título: |
Soil biodiversity for agricultural sustainability. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Agriculture, Ecosystems and Environment, v. 121, p. 233-244, 2007. |
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Idioma: |
Inglês |
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Conteúdo: |
We critically highlight some evidence for the importance of soil biodiversity to sustaining (agro-)ecosystem functioning and explore directions for future research. We first deal with resistance and resilience against abiotic disturbance and stress. There is evidence that soil biodiversity does confer stability to stress and disturbance, but the mechanism is not yet fully understood. It appears to depend on the kind of stress and disturbance and on the combination of stress and disturbance effects. Alternatively, community structure may play a role. Both possible explanations will guide further research. We then discuss biotic stress. There is evidence that soil microbial diversity confers protection against soil-borne disease, but crop and soil type and management also play a role. Their relative importance as well as the role of biodiversity in multitrophic interactions warrant further study. Henceforth, we focus on the effects of plant and soil biodiversity on nutrient and water use efficiencies as important ecological functions in agroecosystems. The available evidence suggests that mycorrhizal diversity positively contributes to nutrient and, possibly, water use efficiency. Soil fauna effects on nutrient and water use efficiencies are also apparent, but diversity effects may be indirect, through effects on soil structure. We present a conceptual diagram relating plant and soil biodiversity with soil structure and water and nutrient use efficiencies as a framework for future studies. We then consider how cropping systems design and management are interrelated and how management options might be interfaced with farmers’ knowledge in taking management decisions. Finally, we attempt to express some economic benefits of soil biodiversity to society as part of a wider strategy of conserving and using agrobiodiversity. MenosWe critically highlight some evidence for the importance of soil biodiversity to sustaining (agro-)ecosystem functioning and explore directions for future research. We first deal with resistance and resilience against abiotic disturbance and stress. There is evidence that soil biodiversity does confer stability to stress and disturbance, but the mechanism is not yet fully understood. It appears to depend on the kind of stress and disturbance and on the combination of stress and disturbance effects. Alternatively, community structure may play a role. Both possible explanations will guide further research. We then discuss biotic stress. There is evidence that soil microbial diversity confers protection against soil-borne disease, but crop and soil type and management also play a role. Their relative importance as well as the role of biodiversity in multitrophic interactions warrant further study. Henceforth, we focus on the effects of plant and soil biodiversity on nutrient and water use efficiencies as important ecological functions in agroecosystems. The available evidence suggests that mycorrhizal diversity positively contributes to nutrient and, possibly, water use efficiency. Soil fauna effects on nutrient and water use efficiencies are also apparent, but diversity effects may be indirect, through effects on soil structure. We present a conceptual diagram relating plant and soil biodiversity with soil structure and water and nutrient use efficiencies as a framework for fu... Mostrar Tudo |
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Thesagro: |
Agricultura Sustentável; Biodiversidade; Solo. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02368naa a2200181 a 4500
001 1313352
005 2015-02-13
008 2007 bl uuuu u00u1 u #d
100 1 $aBRUSSAARD, L.
245 $aSoil biodiversity for agricultural sustainability.$h[electronic resource]
260 $c2007
520 $aWe critically highlight some evidence for the importance of soil biodiversity to sustaining (agro-)ecosystem functioning and explore directions for future research. We first deal with resistance and resilience against abiotic disturbance and stress. There is evidence that soil biodiversity does confer stability to stress and disturbance, but the mechanism is not yet fully understood. It appears to depend on the kind of stress and disturbance and on the combination of stress and disturbance effects. Alternatively, community structure may play a role. Both possible explanations will guide further research. We then discuss biotic stress. There is evidence that soil microbial diversity confers protection against soil-borne disease, but crop and soil type and management also play a role. Their relative importance as well as the role of biodiversity in multitrophic interactions warrant further study. Henceforth, we focus on the effects of plant and soil biodiversity on nutrient and water use efficiencies as important ecological functions in agroecosystems. The available evidence suggests that mycorrhizal diversity positively contributes to nutrient and, possibly, water use efficiency. Soil fauna effects on nutrient and water use efficiencies are also apparent, but diversity effects may be indirect, through effects on soil structure. We present a conceptual diagram relating plant and soil biodiversity with soil structure and water and nutrient use efficiencies as a framework for future studies. We then consider how cropping systems design and management are interrelated and how management options might be interfaced with farmers’ knowledge in taking management decisions. Finally, we attempt to express some economic benefits of soil biodiversity to society as part of a wider strategy of conserving and using agrobiodiversity.
650 $aAgricultura Sustentável
650 $aBiodiversidade
650 $aSolo
700 1 $aRUITER, P. C. de
700 1 $aBROWN, G. G.
773 $tAgriculture, Ecosystems and Environment$gv. 121, p. 233-244, 2007.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
12/03/2002 |
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Data da última atualização: |
11/07/2013 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
ALMEIDA, R. de A.; SILVA, J. G. da. |
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Afiliação: |
ROGÉRIO DE ARAÚJO ALMEIDA, UFG; JOSE GERALDO DA SILVA, CNPAF. |
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Título: |
Dinamômetro para implementos à tração animal. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Tropical, Goiania, v. 30, n. 1, p. 107-108, jan/jun, 2000. |
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Idioma: |
Português |
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Conteúdo: |
Para coletar os dados referentes ao esforço necessário a tração, na avaliação de desempenho de uma semeadora adubadora a tração animal, com diferentes sistemas de sulcadores, regulagens de disco de corte e coberturas mortas, no plantio direto do feijoeiro (Phaseolus vulgaris L.), foi desenvolvido um dinamometro, a partir de um cilindro hidráulico, utilizando-se uma mangueira hidraulica de alta pressa, um manometro com escola de 0 a 40 kgf.cm2, um engate para o tracionamento, um cabo de aço e conexões hidráulicas. |
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Thesagro: |
Arado; Implemento agrícola; Tração animal. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/28456/1/pat30n1almeida.pdf
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Marc: |
LEADER 00989nam a2200157 a 4500
001 1209402
005 2013-07-11
008 2000 bl uuuu u00u1 u #d
100 1 $aALMEIDA, R. de A.
245 $aDinamômetro para implementos à tração animal.
260 $aPesquisa Agropecuária Tropical, Goiania, v. 30, n. 1, p. 107-108, jan/jun$c2000
520 $aPara coletar os dados referentes ao esforço necessário a tração, na avaliação de desempenho de uma semeadora adubadora a tração animal, com diferentes sistemas de sulcadores, regulagens de disco de corte e coberturas mortas, no plantio direto do feijoeiro (Phaseolus vulgaris L.), foi desenvolvido um dinamometro, a partir de um cilindro hidráulico, utilizando-se uma mangueira hidraulica de alta pressa, um manometro com escola de 0 a 40 kgf.cm2, um engate para o tracionamento, um cabo de aço e conexões hidráulicas.
650 $aArado
650 $aImplemento agrícola
650 $aTração animal
700 1 $aSILVA, J. G. da
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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